CN209930033U - Dual-redundancy power supply system - Google Patents
Dual-redundancy power supply system Download PDFInfo
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- CN209930033U CN209930033U CN201920576138.4U CN201920576138U CN209930033U CN 209930033 U CN209930033 U CN 209930033U CN 201920576138 U CN201920576138 U CN 201920576138U CN 209930033 U CN209930033 U CN 209930033U
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Abstract
The utility model provides a dual-redundancy power supply system, include: the front train marshalling power supply subsystem, the rear train marshalling power supply electronic system and the extension power supply switch; the front vehicle grouping power supply subsystem comprises a front vehicle alternating current bus and a front vehicle grid-connected power supply switch, and the front vehicle grid-connected power supply switch is arranged between different connection nodes of the front vehicle auxiliary converter and the front vehicle alternating current bus; the rear vehicle marshalling power supply subsystem comprises a rear vehicle alternating-current bus and a rear vehicle grid-connected power supply switch, and the rear vehicle grid-connected power supply switch is arranged between different rear vehicle auxiliary converters and connecting nodes of the rear vehicle alternating-current bus; the front vehicle alternating current bus and the rear vehicle alternating current bus are connected through the extension power supply switch. Through the embodiment of the utility model provides a dual-redundancy power supply system can realize the extension power supply between the grid-connected power supply in the marshalling and the marshalling, and dual-redundancy power supply system can effectively guarantee the normal work of load, improves power supply system's reliability.
Description
Technical Field
The utility model relates to a redundant power supply technical field particularly, relates to a dual-redundancy power supply system.
Background
With the economic and high-speed development of China, the rail transit technology is rapidly improved. Because of the large number of passengers and the increased transportation capacity to solve the problem of busy train number, the train generally adopts two marshalling and reconnection operation modes.
The three-phase alternating current bus in each existing marshalling is independently powered, a plurality of auxiliary converters are connected in parallel in each marshalling, and if part or all of the auxiliary converters are in failure, the problem that the power supply capacity is insufficient or even the power cannot be supplied is inevitably caused, so that the normal operation of the whole train is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, an object of the embodiments of the present invention is to provide a dual redundant power supply system.
The embodiment of the utility model provides a dual-redundancy power supply system, include: the front train marshalling power supply subsystem, the rear train marshalling power supply electronic system and the extension power supply switch;
the front vehicle marshalling power supply subsystem comprises a front vehicle alternating current bus and a front vehicle grid-connected power supply switch, the front vehicle alternating current bus is connected with at least two front vehicle auxiliary converters, and the front vehicle grid-connected power supply switch is arranged between different connecting nodes of the front vehicle auxiliary converters and the front vehicle alternating current bus;
the rear vehicle marshalling power supply subsystem comprises a rear vehicle alternating current bus and a rear vehicle grid-connected power supply switch, the rear vehicle alternating current bus is connected with at least two rear vehicle auxiliary converters, and the rear vehicle grid-connected power supply switch is arranged between different connecting nodes of the rear vehicle auxiliary converters and the rear vehicle alternating current bus;
the front vehicle alternating current bus is connected with the rear vehicle alternating current bus through the extended power supply switch.
In one possible implementation, the front consist power supply subsystem further includes: the first front vehicle auxiliary converter and the second front vehicle auxiliary converter;
the first front vehicle auxiliary converter is connected with the front vehicle alternating current bus and arranged on one side of the front vehicle grid-connected power supply switch;
and the second front vehicle auxiliary converter is connected with the front vehicle alternating current bus and arranged on the other side of the front vehicle grid-connected power supply switch.
In one possible implementation, the front consist power supply subsystem further includes: a first front vehicle pantograph and a second front vehicle pantograph;
the first front vehicle pantograph is connected with the first front vehicle auxiliary converter;
and the second front vehicle pantograph is connected with the second front vehicle auxiliary converter.
In one possible implementation, the number of the first front auxiliary converters is 2, and the number of the second front auxiliary converters is 2.
In one possible implementation, the rear consist power supply subsystem further includes: the first rear vehicle auxiliary converter and the second rear vehicle auxiliary converter;
the first rear vehicle auxiliary converter is connected with the rear vehicle alternating current bus and arranged on one side of the rear vehicle grid-connected power supply switch;
and the second rear vehicle auxiliary converter is connected with the rear vehicle alternating current bus and arranged on the other side of the rear vehicle grid-connected power supply switch.
In one possible implementation, the rear consist power supply subsystem further includes: a first rear pantograph and a second rear pantograph;
the first rear vehicle pantograph is connected with the first rear vehicle auxiliary converter;
and the second rear vehicle pantograph is connected with the second rear vehicle auxiliary converter.
In one possible implementation, the number of the first rear auxiliary converters is 2, and the number of the second rear auxiliary converters is 2.
In one possible implementation, the extended power supply switch is an extended power supply contactor.
In one possible implementation manner, the front vehicle grid-connected power supply switch and the rear vehicle grid-connected power supply switch are both grid-connected power supply contactors.
In one possible implementation, the extended power switch and the front consist power supply subsystem are both disposed within a front consist.
The embodiment of the utility model provides an in the above-mentioned scheme that provides, set up the power supply switch that is incorporated into the power networks in the power supply system of group, set up the extension power supply switch between the group. Under normal conditions, grid-connected power supply is independently carried out in the marshalling, and power supply redundancy in the marshalling can be realized through a grid-connected power supply switch when an auxiliary converter in the marshalling is abnormal; if all the auxiliary converters in the marshalling are abnormal, the expanded power supply between the marshalling is realized by closing the expanded power supply switch, and the expanded power supply redundancy between the marshalling is realized. The dual-redundancy power supply system can effectively ensure the normal work of the load and improve the reliability of the power supply system.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 shows a first structural schematic diagram of a dual redundant power supply system provided by an embodiment of the present invention;
fig. 2 shows a second schematic structural diagram of a dual redundant power supply system provided by the embodiment of the present invention;
fig. 3 shows a third structural schematic diagram of a dual redundant power supply system provided by the embodiment of the present invention.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The embodiment of the utility model provides a pair of redundant power supply system, it is shown with reference to fig. 1, include: a front consist power supply subsystem 10, a rear consist power supply subsystem 20, and an extended power switch ACK.
The front vehicle grouping power supply subsystem 10 comprises a front vehicle alternating current bus 101 and a front vehicle grid-connected power supply switch TBK1, wherein the front vehicle alternating current bus 101 is connected with at least two front vehicle auxiliary converters, and the front vehicle grid-connected power supply switch TBK1 is arranged between different connection nodes of the front vehicle auxiliary converters and the front vehicle alternating current bus 101; the rear vehicle marshalling power supply subsystem 20 comprises a rear vehicle alternating-current bus 201 and a rear vehicle grid-connected power supply switch TBK2, the rear vehicle alternating-current bus 201 is connected with at least two rear vehicle auxiliary converters, and the rear vehicle grid-connected power supply switch TBK2 is arranged between different rear vehicle auxiliary converters and connecting nodes of the rear vehicle alternating-current bus 201; the front alternating current bus 101 and the rear alternating current bus 201 are connected through an extended power supply switch ACK.
The embodiment of the utility model provides an in, this power supply system adopts the two redundant designs of grid-connected power supply + extension power supply. Specifically, under normal conditions, the front vehicle group and the rear vehicle group are independently supplied with power, that is, the extended power supply switch ACK is in an off state under normal conditions. When the power supply of the front train group power supply subsystem 10 is abnormal or the power supply of the rear train group power supply subsystem 20 is abnormal, the extended power supply switch ACK is closed, and the non-failure train group power supply subsystem supplies power to the failure train group power supply subsystem, so that extended power supply is realized. For example, if the power supply from the front vehicle group power supply subsystem 10 is abnormal, after the extended power supply switch ACK is closed, the rear vehicle group power supply subsystem 20 may supply power to the rear vehicle load and supply power to the load of the front vehicle instead of the front vehicle group power supply subsystem 10.
Meanwhile, each group power supply subsystem realizes independent grid-connected power supply, and at least two auxiliary converters in each group realize grid-connected power supply. And the double redundancy design is realized by combining the extended power supply mode. Specifically, for a grouped power supply subsystem, each auxiliary converter can independently supply power under a normal condition; when one auxiliary converter is abnormal, the grid-connected power supply switch is closed, and other normal auxiliary converters replace the abnormal auxiliary converter to supply power. As shown in fig. 1, when the front vehicle auxiliary converter on the left side is abnormal, the front vehicle grid-connected power supply switch TBK1 may be closed, and the front vehicle auxiliary converter on the right side may supply power to the ac load on the entire front vehicle ac bus 101.
In addition, the grid-connected power supply switch can be closed under normal conditions, and if one auxiliary converter is short-circuited, the grid-connected power supply switch is disconnected, so that the power supply loop on the short-circuited side is prevented from influencing the whole alternating current bus. Still taking the front vehicle grouping power supply subsystem 10 as an example, as shown in fig. 1, if a short-circuit fault occurs in the power supply line corresponding to the front vehicle auxiliary converter on the left side, the front vehicle grid-connected power supply switch TBK1 may be turned off, so as to avoid affecting the normal power supply of the power supply line corresponding to the front vehicle auxiliary converter on the right side.
Optionally, in this embodiment, the extended power supply switch ACK is an extended power supply contactor. The front vehicle grid-connected power supply switch and the rear vehicle grid-connected power supply switch are both grid-connected power supply contactors.
The embodiment of the utility model provides a pair of dual-redundancy power supply system sets up the power switch that is incorporated into the power networks in the power supply system of group, sets up the extension power switch between the group. Under normal conditions, grid-connected power supply is independently carried out in the marshalling, and power supply redundancy in the marshalling can be realized through a grid-connected power supply switch when an auxiliary converter in the marshalling is abnormal; if all the auxiliary converters in the marshalling are abnormal, the expanded power supply between the marshalling is realized by closing the expanded power supply switch, and the expanded power supply redundancy between the marshalling is realized. The dual-redundancy power supply system can effectively ensure the normal work of the load and improve the reliability of the power supply system.
On the basis of the above embodiment, referring to fig. 2, the front consist power supply subsystem 10 further includes: a first front auxiliary converter 102 and a second front auxiliary converter 103.
The first front vehicle auxiliary converter 102 is connected with a front vehicle alternating current bus 101 and arranged on one side of a front vehicle grid-connected power supply switch TBK 1; the second front auxiliary converter 103 is connected with the front ac bus 101 and is disposed on the other side of the front grid-connected power supply switch TBK 1.
Likewise, the rear consist power supply subsystem 20 further includes: a first rear auxiliary converter 202 and a second rear auxiliary converter 203. The first rear vehicle auxiliary converter 202 is connected with a rear vehicle alternating current bus 201 and arranged on one side of a rear vehicle grid-connected power supply switch TBK 2; the second rear auxiliary converter 203 is connected with the rear alternating-current bus 201 and arranged on the other side of the rear grid-connected power supply switch TBK 2.
The embodiment of the utility model provides an in, every marshalling of train is equipped with a power supply subsystem, contains two at least types of auxiliary current transformer in every marshalling power supply subsystem, and two types of auxiliary current transformer set up the both sides at the power supply switch that is incorporated into the power networks respectively. The two types of auxiliary converters can adopt the same auxiliary converter, but the positions of the two auxiliary converters on the alternating current bus are different, wherein one type of auxiliary converter is arranged on one side of the grid-connected power supply switch, and the other type of auxiliary converter is arranged on the other side of the grid-connected power supply switch.
Optionally, each type of auxiliary converter corresponds to an independent pantograph, that is, each type of auxiliary converter can obtain electric energy from an external contact network independently, so as to supply power to the ac bus. Referring to fig. 2, the front consist power supply subsystem 10 further includes: a first front pantograph 104 and a second front pantograph 105. The first front pantograph 104 is connected with the first front auxiliary converter 102; the second front pantograph 105 is connected to the second front auxiliary converter 103.
Likewise, the rear consist power supply subsystem 20 further includes: a first rear pantograph 204 and a second rear pantograph 205; the first rear pantograph 204 is connected with the first rear auxiliary converter 202; the second rear pantograph 205 is connected to the second rear auxiliary converter 203.
The embodiment of the utility model provides an in, each type of auxiliary current transformer all can realize independently being incorporated into the power networks the power supply. For example, in the former vehicle formation power supply subsystem 10, the first front vehicle pantograph 104 and the second front vehicle pantograph 105 may be respectively connected to an external catenary, and further connected to the front vehicle ac bus 101 through the first front vehicle auxiliary converter 102 and the second front vehicle auxiliary converter 103, respectively, so that the load of the front vehicle may draw electric energy from the front vehicle ac bus 101 to realize power supply to the load of the front vehicle.
It should be noted that the connection of the pantograph to the auxiliary converter in the present embodiment is not limited to the connection of the pantograph directly to the auxiliary converter, but only describes the connection relationship between the pantograph and the auxiliary converter, which is electrically connected. In an actual application scenario, the pantograph can be connected with the auxiliary converter only after passing through devices such as a transformer and a traction converter.
In addition, each train consist of 8 cars and generally includes four auxiliary converters, and in this embodiment, the four auxiliary converters are uniformly divided by the grid-connected power supply switch, that is, two auxiliary converters are located on one side of the grid-connected power supply switch, and the other two auxiliary converters are located on the other side of the grid-connected power supply switch. Specifically, the number of the first front auxiliary converters 102 is 2, and the number of the second front auxiliary converters 103 is 2. The number of the first rear auxiliary converters 202 is 2 and the number of the second rear auxiliary converters 203 is 2.
A schematic diagram of a power supply subsystem containing a consist of eight cars is shown in fig. 3. Specifically, the power supply subsystems of the two groups are connected through an expansion power supply switch ACK, and a grid-connected power supply switch (namely TBK1 and TBK2) is arranged in each group power supply subsystem, so that dual-redundancy power supply is realized. In fig. 3, TC denotes Trailer car with Cabin, i.e. a Trailer with cab; m represents Motor car, i.e., a power vehicle; TP denotes a Trailer car with a Pantograph, i.e., a Trailer with a Pantograph provided at the section of the car; t denotes Trailer car, i.e. a Trailer without cab and pantograph.
In addition, in order to facilitate the arrangement of the extended power supply switch ACK, in the present embodiment, both the extended power supply switch ACK and the front vehicle group power supply subsystem 10 are arranged in the front vehicle group.
The embodiment of the utility model provides a pair of dual-redundancy power supply system sets up the power switch that is incorporated into the power networks in the power supply system of group, sets up the extension power switch between the group. Under normal conditions, grid-connected power supply is independently carried out in the marshalling, and power supply redundancy in the marshalling can be realized through a grid-connected power supply switch when an auxiliary converter in the marshalling is abnormal; if all the auxiliary converters in the marshalling are abnormal, the expanded power supply between the marshalling is realized by closing the expanded power supply switch, and the expanded power supply redundancy between the marshalling is realized. The dual-redundancy power supply system can effectively ensure the normal work of the load and improve the reliability of the power supply system.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A dual redundant power supply system, comprising: the front train marshalling power supply subsystem, the rear train marshalling power supply electronic system and the extension power supply switch;
the front vehicle marshalling power supply subsystem comprises a front vehicle alternating current bus and a front vehicle grid-connected power supply switch, the front vehicle alternating current bus is connected with at least two front vehicle auxiliary converters, and the front vehicle grid-connected power supply switch is arranged between different connecting nodes of the front vehicle auxiliary converters and the front vehicle alternating current bus;
the rear vehicle marshalling power supply subsystem comprises a rear vehicle alternating current bus and a rear vehicle grid-connected power supply switch, the rear vehicle alternating current bus is connected with at least two rear vehicle auxiliary converters, and the rear vehicle grid-connected power supply switch is arranged between different connecting nodes of the rear vehicle auxiliary converters and the rear vehicle alternating current bus;
the front vehicle alternating current bus is connected with the rear vehicle alternating current bus through the extended power supply switch.
2. The dual redundant power supply system of claim 1 wherein said front consist power supply subsystem further comprises: the first front vehicle auxiliary converter and the second front vehicle auxiliary converter;
the first front vehicle auxiliary converter is connected with the front vehicle alternating current bus and arranged on one side of the front vehicle grid-connected power supply switch;
and the second front vehicle auxiliary converter is connected with the front vehicle alternating current bus and arranged on the other side of the front vehicle grid-connected power supply switch.
3. The dual redundant power supply system of claim 2 wherein said front consist power supply subsystem further comprises: a first front vehicle pantograph and a second front vehicle pantograph;
the first front vehicle pantograph is connected with the first front vehicle auxiliary converter;
and the second front vehicle pantograph is connected with the second front vehicle auxiliary converter.
4. The dual redundant power supply system according to claim 2 wherein said first front auxiliary converters are 2 in number and said second front auxiliary converters are 2 in number.
5. The dual redundant power supply system of claim 1 wherein said rear consist power supply subsystem further comprises: the first rear vehicle auxiliary converter and the second rear vehicle auxiliary converter;
the first rear vehicle auxiliary converter is connected with the rear vehicle alternating current bus and arranged on one side of the rear vehicle grid-connected power supply switch;
and the second rear vehicle auxiliary converter is connected with the rear vehicle alternating current bus and arranged on the other side of the rear vehicle grid-connected power supply switch.
6. The dual redundant power supply system of claim 5 wherein said rear consist power supply subsystem further comprises: a first rear pantograph and a second rear pantograph;
the first rear vehicle pantograph is connected with the first rear vehicle auxiliary converter;
and the second rear vehicle pantograph is connected with the second rear vehicle auxiliary converter.
7. The dual redundant power supply system according to claim 5 wherein said first rear auxiliary converters are 2 in number and said second rear auxiliary converters are 2 in number.
8. The dual redundant power supply system of claim 1 wherein said extended power supply switch is an extended power supply contactor.
9. The dual redundant power supply system of claim 1 wherein said front and rear grid-tied power supply switches are grid-tied power supply contactors.
10. The dual redundant power supply system of claim 1 wherein said extended power switch and said front consist power subsystem are both disposed within a front consist.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920576138.4U CN209930033U (en) | 2019-04-24 | 2019-04-24 | Dual-redundancy power supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920576138.4U CN209930033U (en) | 2019-04-24 | 2019-04-24 | Dual-redundancy power supply system |
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| CN209930033U true CN209930033U (en) | 2020-01-10 |
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| CN201920576138.4U Active CN209930033U (en) | 2019-04-24 | 2019-04-24 | Dual-redundancy power supply system |
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